Building-block and chimney.



No. 792,342. PATENTED JUNE 13, 1905. C. H. NESSELROAD.

BUILDING BLOCK AND CHIMNEY.

APPLICATION FILED JAN.11,1905.

.7 i I I:

aldllwill m UNITED STATES Patented June 13, 1905.

PATENT OFFICE.

BUILDING-BLOCK AND CHIMNEY.

SPECIFICATION forming part of Letters Patent N 0 792,342, dated June 13, 1905. Application filed January 11, 1905. Serial No. 240,600.

To all whom, it may concern:

Be it known that I, CHARLES H. N ESSELROAD, a citizen of the United States, residing at Stuart, in the county of Guthrie and State of Iowa, have invented new and useful Improvements in Building-Blocks and Chimneys, of which the following is a specification.

My invention pertains to building-blocks, more particularly blocks for building chimneys and the like; and it consists in the peculiar and advantageous blocks and chimney hereinafter described and particularly pointed out in the claims appended.

1n the accompanying drawings, forming part of this specification, Figure 1 is a perspective view of so much of a chimney as is necessary to illustrate my invention. Fig. 2 is a vertical section of the same. Fig. 3 is a top plan view of one course of blocks. Fig. 4 is a perspective view of one of the right blocks of the chimney removed, and Fig. 5 is a similar view of one of the left blocks.

Similar letters designate corresponding parts in all the views of the drawings, referring to which A is the main portionof my novel chimney, and B is the cap thereof.

As best shown in Fig. 1, the main portion A of the chimney is composed of courses of building-blocks (J, of concrete or other fire-resisting material, and the blocks of one course are arranged opposite to the blocks of the adjacent course or coursesr1. 6., the blocks of one course are rights and the blocks of the adjacent course or courses leftsthis in order to break joints around the corners of the chimney, and thereby contribute materially to the stability and durability of the chimney as a whole.

The blocks C are similar in construction except that some are rights and some lefts, and therefore a detailed description of the blocks shown in Figs. i and 5 will sufiice to impart a definite understanding of all. The said blocks, Figs. 4 and 5, respectively, comprise an exterior body portion a, having an angular arm 6 at one end and also having grooves 0 in its lower and upper edges extending throughout its length and designed to receive mortar or the like, as presently explained, and an interior body portion cl extending above the exterior portion a and arranged with its lower edge above that of said exterior portion, whereby the exterior portion below the interior portion constitutes a flange e, and having a dovetail tenon f at its outer end extending beyond the adjacent end of portion (0. Between the inner end of the interior body portion d and the arm a of the exterior portion a a dovetail groove h is formed, said groove being designed to receive the tenon f of a complementary block, as best shown in Fig. 3.

In constructing a chimney of my novel blocks four blocks 0, left blockssuch as shown in Fig. 5, for instanceare placed with their tenons f in the grooves 7b of their complements, as shown in Fig. 3, and with this done it will be observed that the blocks will be locked together of themselves and that each side of the course will be formed by the body of one block and the arm of the next adjacent block. Mortar or the like is is then placed in the grooves of the blocks comprised in the course mentioned, and the blocks of the next upper course, which are preferably right blocks, such as shown in Fig. 4, are assembled and connected on the first mentioned course in the manner shown in Figs. 1 and 2. When the courses are thus superposed, it will be observed that the interposed mortar is will connect the courses and act as a key between the same, also that the upward extensions of the inner portions of the lower blocks resting within the flanges c of the upper blocks will preclude lateral movement of the courses with respect to each other, and hence will lend great strength and rigidity to the chimney as a whole. It will further be observed that by Moreover, it

will be noted that the blocks are light in weight and compact, and hence may be handled and positioned by the mason with but little effort.

The blocks C may be of any height or width compatible with the purposes of my invention without involving a departure from the scope thereof. I prefer, however, to make the blocks four inches wide, which is the standard width of bricks, this in order that the blocks may be used in repairing a brick chimney and the faces at the outer and inner sides of the chimney may be preserved.

While I prefer to make the several blocks comprised in the chimney of a uniform width or height, I do not desire to be understood as confining myself to the same, inasmuch as the blocks may be made of different widths or heights without departing from my invention or affecting the strength and durability of the chimney.

It is apparent that the cap B (shown in Figs. 1 and 2) might be formed of four blocks constructed in accordance with my invention without departing from said invention. I prefer, however, to construct the cap in the manner illustrated2 a, of a lower course of blocks m, an intermediate course of blocks 12, and an upper course of blocks '1', all of said blocks being similar to the blocks 0, except in shape and size.

When it is desired to divide my improved chimney into two fines, lapped blocks C, such as shown in Fig. 2, may be employed, the said blocks being arranged one above the other in vertical grooves in the inner sides of opposite blocks C.

It will be gathered from the foregoing that my novel blocks are susceptible of cheap production in molds or otherwise and are so com pact as take up but a minimum amount of space in storage or shipment.

It is obvious that when desired certain of the blocks entering into the chimney may be provided with a pipe-hole and an opening for the reception of a soot-box; but I have deemed it unnecessary to illustrate these features.

I have entered into a detailed description of the construction and relative arrangement of parts embraced in the present and preferred embodiment of my invention in order to impart a definite understanding of the said embodiment. I do not desire, however, to be understood as confining myselfto the said specific construction and relative arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. A building-block comprising an exterior body portion having an arm at one end, and

an interior body portion extending above the exterior portion and arranged with its lower edge above that of said exterior portion and having a tenon at its outer end and also having its inner end arranged at a distance from the arm of the exterior portion, whereby a groove is formed between the two.

2. A building-block comprising an exterior body portion having an arm at one end the inner side of which is shaped to form one wall of a dovetail groove, and an interior body portion extending above the exterior portion and arranged with its lower edge above that of said exterior portion and having a dovetail tenon at its outer end and also having its inner end shaped to form the opposite wall of the said dovetail groove.

3. A building-block comprising an exterior body portion having an arm at one end, the inner side of which is shaped to form one wall of a dovetail groove, and also having grooves in its upper and lower edges extending throughout the length thereof, and an interior body portion extending above the exterior portion and arranged with its lower edge above that of said exterior portion and having a dovetail tenon at its outer end and also having its inner end shaped to form the opposite wall of the said dovetail groove.

i. A building-block comprising a body having an arm at one end extending throughout its height, a tenon at its opposite end, extending throughout its height and arranged intermediate its vertical sides and in the same vertical plane as the arm, and a groove at the inner side of the arm adapted to receive the tenon of a complementary block.

5. A building-block comprising abody having a depending flange, an upwardly-extending inner portion, an arm at one end, a tenon at the opposite end, arranged in the same vertical plane as the arm, and a groove at the inner side of the arm adapted to receive the tenon of a complementary block.

6. In a chimney, the combination of superposed courses of blocks; the blocks of the courses being relatively arranged to break joints around the corners of the chimney, and each block comprising a body having an arm at one end, a tenon at its opposite end, arranged in the same vertical plane as the arm, and a groove at the inner side of the arm receiving the tenon of a complementary block.

7. In a chimney, the combination of superposed courses of blocks; the blocks of the courses being relatively arranged to break joints around the corners of the chimney, and each block comprising a body having a depending exterior flange, an upwardly-extending inner portion, an arm at one end, a tenon at the opposite end, arranged in the same vertical plane as the arm, and a groove at the in- ITO ner side of the arm receiving the tenon of a In testimony whereof I have hereunto set complementary block. my hand in presence of two subscribing wit- 8. In a chimney, the combination with sunesses.- perposed courses of blocks; of lapped parti- CHARLES H. NESSELROAD. 5 tion-blocks arranged in grooves in opposite W'itnesses:

blocks of the courses and dividing the chim- O. N. CLARK,

ney into fiues. W. H. COX. 

